Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...

[linux-2.6-microblaze.git] / include / rv / instrumentation.h

diff --git a/include/rv/instrumentation.h b/include/rv/instrumentation.h
new file mode 100644 (file)
index 0000000..d4e7a02
--- /dev/null
+++ b/include/rv/instrumentation.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019-2022 Red Hat, Inc. Daniel Bristot de Oliveira <bristot@kernel.org>
+ *
+ * Helper functions to facilitate the instrumentation of auto-generated
+ * RV monitors create by dot2k.
+ *
+ * The dot2k tool is available at tools/verification/dot2/
+ */
+
+#include <linux/ftrace.h>
+
+/*
+ * rv_attach_trace_probe - check and attach a handler function to a tracepoint
+ */
+#define rv_attach_trace_probe(monitor, tp, rv_handler)                                 \
+       do {                                                                            \
+               check_trace_callback_type_##tp(rv_handler);                             \
+               WARN_ONCE(register_trace_##tp(rv_handler, NULL),                        \
+                               "fail attaching " #monitor " " #tp "handler");          \
+       } while (0)
+
+/*
+ * rv_detach_trace_probe - detach a handler function to a tracepoint
+ */
+#define rv_detach_trace_probe(monitor, tp, rv_handler)                                 \
+       do {                                                                            \
+               unregister_trace_##tp(rv_handler, NULL);                                \
+       } while (0)